Bridge global catalogue DB to per-store product catalogue

Adds a separate CatalogueDB (pgvector) connection alongside the main
nearledb, plus a new catalogue module (repository/service/controller/
routes) to browse it by brand, category, and keyword, with brand
optional so the whole ~237-product catalogue can be browsed unfiltered.

Adds the actual bridge: importing a catalogue product snapshots it into
the tenant's own products table (keyed on brand+catalogueid, since a
catalogue row's bare id is only unique within its own brand table),
then links it via the existing productlocations upsert. Re-importing
tops up stock and refreshes price instead of duplicating. Also adds an
imported-refs endpoint so the frontend can badge already-imported items
without diffing full product lists, and wires the new AWS S3 image
store used to resolve catalogue product photos.

Bumps Go/Docker to 1.24 for the AWS SDK dependency this needs.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

facade/container.go

@@ -18,18 +18,30 @@ type Facade struct {
 	PartnerController    *controllers.PartnerController
 	CustomerController     *controllers.CustomerController
 	StockRequestController *controllers.StockRequestController
+	CatalogueController    *controllers.CatalogueController
 }
 
-func NewFacade(db *gorm.DB) *Facade {
+// NewFacade wires up modules against the main (nearledb) connection.
+// catalogueDB is a separate connection to the pgvector catalogue database;
+// it may be nil if catalogue env vars are not configured, in which case
+// catalogue endpoints will error at query time rather than at startup.
+func NewFacade(db *gorm.DB, catalogueDB *gorm.DB) *Facade {
 
 	// User Module
 	userRepo := repositories.NewUserRepository(db)
 	userService := services.NewUserService(userRepo)
 	userController := controllers.NewUserController(userService)
 
+	// Catalogue Module (separate pgvector DB — never the main `db`). Built
+	// before the Product Module because ProductService depends on it to
+	// bridge catalogue imports into a tenant's own product catalogue.
+	catalogueRepo := repositories.NewCatalogueRepository(catalogueDB)
+	catalogueService := services.NewCatalogueService(catalogueRepo)
+	catalogueController := controllers.NewCatalogueController(catalogueService)
+
 	// Product Module
 	productRepo := repositories.NewProductRepository(db)
-	productService := services.NewProductService(productRepo)
+	productService := services.NewProductService(productRepo, catalogueService)
 	productController := controllers.NewProductController(productService)
 
 	// Order Module
@@ -77,5 +89,6 @@ func NewFacade(db *gorm.DB) *Facade {
 		PartnerController:      partnerController,
 		CustomerController:     customerController,
 		StockRequestController: stockRequestController,
+		CatalogueController:    catalogueController,
 	}
 }